Renk, Karl Friedrich and Meier, Alexander and Stahl, Benjamin Ingo and Glukhovskoy, Anatoly and Jain, Manish and Appel, Helmut and Wegscheider, Werner
Operation of a Bloch oscillator.
We report the operation of a Bloch oscillator. The active medium was a staticvoltage driven, doped GaAs/AlAs superlattice which was electromagnetically coupled to a resonator. The oscillator produced tuneable microwave radiation (frequency ~ 60 GHz; power ~ 0.5 mW; efficiency ~ 4 %). The gain (~ 10^4 /cm) was due to the nonlinearity mediated by miniband electrons. We also present a theory of the ...
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